This week's secret ingredient was lightbulbs! Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher."

Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher." The Exploratorium's Iron Science Teacher competition showcases science teachers as they devise demonstrations around a particular "secret" ingredient—and today's secret ingredient was oil!

This presentation, originally recorded in 1992, is a meditation on a lifetime dedicated to music. The renowned Hindustani classical music master Ali Akbar Khan recounts the earliest days of his musical study with his father (including his 18-hour practice days); how he chose to play and master his instrument, the sarod (maybe it chose him); and how music can be a healing force. He plays the instrument and explains how it works and how it’s different from the more well-known sitar. Khan also discusses the founding of his music school in San Rafael, California, a manifestation of his philosophy that knowledge of music should be shared with others.

Newton wasn’t really ready to believe that light was a wave, and so he didn’t see what was in front of his eyes. Staff physicist Paul Doherty tells how to do the same experiment that Newton did back in the 1650s to see the wave nature of light.

Webcasts made possible through
the generosity of the Gordon and Betty Moore Foundation, The Jim Clark
Endowment for Internet Education, the McBean Family Foundation,.and the Corporation for Educational Networks Initiatives in California (CENIC).